Steam-turbine.



No. 649,0I4. -Pate-nted"'May 8,1900. E. c; TERRY. STEAM TURBINE.

Application filed July 19, 1899.) (No Model.) 4 Sheets-Sheet l.

No. 649,0I4. Patented May 8, |900. E. C. TERRY. A v

STEAM TURBINE.

(Application mea my 19, 1899.)

(No Modl.) 4 Sheets-Sheet 2.

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m n I A 32a/30 c 2i 267 27 I 4/ %20 2/ www A K M/755555 fn rfwf' r KK fda/ard 6.176773 'No. 649,0!4. Patented May 8, |900.

E. C. TERRY.

STEAM TURBINE.

(Application filed July 19, 1899.) (No Model.) I 4 Sheets-Sheet 3.

m fda-552C Jef/y, Qjm y ,Q7-fem@ J/g;

No. 649,0!4. Patenfd may a, |900.

. E. C. TERRY.

STEAM TURBINE.

(Applicatinn filed July 19, 1899.) Y (No Model.) 4 sheets-sheet 4. l

42 IHIIIIIIIIIIIIII||I||||II| *42 a 2 \h I, Q .Qmd 4a 4? l M/755555 57m/7 m' fdwrZCQe/"iy ffj-f NrrRD STATRs PATENT FFICR.

EDWARD c. TERRY, or HARTFORD, oounncrionr.

STEAM-Turisme.;

SPECIFICATION forming part of Lef-.ters Patent No. 649,014, dated May e, 1900.

Application nea July 19,1899.

To vall zoll/0112, it may concern:

Be it known that I, EDWARD C. TERRY, a citizen of the United States, residing in Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Steam-Turbines, of which the following is a specification.

My invention relates to improvements in steam-turbines; and the main objects of my improvement are simplicity and economy in construction and efficiency in operation.

In the accom an 'ing drawings Figure 1 is b b 7 b a side elevation of mysteam-turbine, together with a Bulkley condenser, shown partly in vertical section. Fig. 2 is an enlarged verti# cal section, partly in elevation, of a portion of the Wheel, the plane of section being indicated by the line w Fig. 3. Fig. 3 is a developed sectional view of the wheel and jetring, the plane of section being indicated by the line y y, Fig. 2. Fig. /1 is a vertical section on the line .e a, Fig. 1, partly in elevation, the scale being4 larger than Fig. 1 and smaller than in Figs. 2 and 3. Fig. 5 is a detached view of the centrifugal packing-disk. Fig. 6 is a side View of a portion of the effluent side of the jet-ring on a scale larger than that of Fig. 4 and smaller than that of Figs. 2 and 3. Fig. 7 is a sectional view of the same on the line s s, Fig. 6. Fig. 8 is a side View of a portion of the inuent side of the jetring, together with a portion of the gate-ring. Fig. 9 is a sectional View of the same, partly in elevation, the plane of section being indicated by the line ff, Fig. S. Fig. 10 is a detached View showing a portion of the jet-ring and gate-ring. Fig. 11 is a sectional View, partly in elevation, 0f a portion of the jet and gate rings on the line u u, Fig. 8. Fig. 12 is a detached View of one of the plates from which the jet-ring is formed, showing the efduent side thereof. Fig. 13 is a similar View showing the opposite side of said plate. Fig. 14

is an edge View of the same, showing the inner edge. Fig. 15 is a sectional View of the same on the line /U o of Fig. 12; and Fig. 16 is a sectional View of a portion of the jet-ring, with diagrammatic lines, showing the taper of the wedge-shaped plates composing said ring.

A designates the main portion of the case, having upon one side a scroll-shaped collector-pipe 17, that gradually enlarges into the sans No. V724,410. (No maar.)

pipe connection 18 and leads to the condenser B, as shown in Fig. 1. The part casing A has a conoidal central hub 19, within which Ithe' Wheel-shaft C is journaled in any proper manner. The broad side or end of the centralhub 19 mainly forms one side of the wheelchamber. The wheel is composed of the wheel-'head D and U-shaped buckets hereinafter described. A caselring 20 is placed around the conoidal central hub of the main part of the case, with one side resting against the flange 21, the inner edge of the ring be# ing partly conoidal to form the outwardlycurved annular discharge-channel 22, and the remainder of its inner edge is recessed to reL ceive the edge of the Wheel. The opposite broad side of the case is formed of the cap E, that is. bolted to the ring 20 and part A by means of bolts 23, which cap covers the wheel and contains the annular steam-chamber 24.

In the central part of the case A, surround,- ing the shaft C, is a water-box 25, which in the main is of an ordinary construction. An annular chamber 26 is formed around the wheel-shaft C, between the part A and the Waterbox 25. l.Upon this shaft I place a packing-sleeve 23, with attached centrifugal packing-disk 27, the sleeve being provided with the ordinary reverse screw threads,

vWhile the disk is preferably, but not necessarily, provided withy one or more ribs 29. One side of the annular chamber 26 is also provided with a similar rib 30, made rigid on the Xed Wall of said chamber. I also form a passage 31; connecting the outer edges of the annular 'chamber 26 and the chamber in the Water-box 25, and place an ordinary clapper-valve 32 in the Water-chamber over the said passage 31.

In case the Water in the water-box should run along the shaft' to the disk 27 the centrifugal action of said disk Within the annular chamber will force the Water back through the passage 31 into the Water-chamber, so as to always keep the chamber full. I have shown a bearing and lubricator for the shaft in Fig. 4; but as the saine is of an ordinary construction and does not form the basis for any claim in this case I consider a further reference thereto unnecessary.

I form the wheel of the wheel-head D, U- shaped buckets 33, studs 34, ring 35, and

IOO

nuts 3G. I prefer to make the U-shaped buckets of tubing rolled or swaged into the form in cross-section shown in Fig. 3, whereby the-buckets are not only U-shaped, but are 5 in 'the form of U-shaped shells with walls of substantially the same thickness through-- out, or, in other words, the interior form of the hollow buckets or shells is substantially the same as their exterior. The studs are 1o of a peculiar construction. The threaded end 37, that screws into threaded holes in the outer edge of the wheel-head D, is large-1' than the body of said studs 34. The said referencenumeral may also designate the body of' the said studs. The said ends 37 at the bottom of the threads should be fully as large or a little larger than the diameter of the said body. The smaller thread ed end 38 in its greatest diameter or top of its thread is no zo larger than the diameter of said body. I thus form the studs of superior strength in proportion to the size of their body. The inner dimensions of the U-shaped buckets on the line a; no of Fig.3 are such as to lit and be z5 filled by the body 34 of the studs, and the curve of the bucket on the inside at its front coincides with the periphery of the body of said studs and fits the same, as shown in Fig. 3, whereby the stud extending through the 3o bucket, as shown in Figs. 2 and 3, into the wheel-head centers the bucket thereon. After screwing the studs into the wheel-head the buckets are placed on said studs, the binding ring or strap placed over the buckets, and

35 the whole secured by nuts 36, as shown.

The jet-ring F or series of jets I form of a series of plates placed so as to lap one on the other, each plate having a portion of a jet on one side and a portion of another jet on the 4o opposite side, the said plates being bound to one side of the steamchamber 24 by means of the outer and inner holding-rings 39 and 40 and the bolts 41, as shown in Fig. 4. Thel` jet-plates 42 are shown separately in Figs. 12 45 to 15. The end 43 of each plate that is at the effluent end of the jets is beveled off obliquely at an angle to correspond with the inclined position of the several plates in the jet-ring. The other ends of said plates may be beveled 5o in like manner or cut off square, as may be desired, as the shape of the effluent side of the jetding is immaterial. Upon one broad side of each 'plate there is a portion of a jet or jet-recess 44 and on the other side there is a portion of another jet-recess 45, which is to form a part of the jet next succeeding the jet-recess 44, so that when the plates are placed together, as shown, the jet-ring forms a series of jets extending obliquely through 6o the ring along the dividing-line of the plates and merging together on the e'llluent side, so as to present a continuous or unbroken annular discharge of steam to the edge of the wheel. The jet portions on the reverse sides of the plates in Figs. 12 and 13 are indicated by broken lines. The jet recesses are of course shaped to the desired form with the narrow neck 4G, that may be opened and closed bythe valves or pins 47. The several plates are wedge-shaped or tapering in crosssection, the taper bein g such that if the planes representing their two sides were continued toward the center of the ring they would moet at said center, as shown by the diagrammatical lines 48, Fig. 1G, which meet at a point or line 49, which represent-s the center of the ring. The several plates are painted and put together and preferably secured by screws 50.l The jet-ring can be linished by turning in a lathe after being thus put together. A rabbet 5l or recess is made near each edge of the ring on the discharge or effluent side, as shown, and the holding-rings 39 and 4() are correspondingly rabbeted to tit the rabbeted edges of the jet-ring, as shown in Fig. 4.

I open and close the series of jets 4G by the valves or pins 47, rigidly mounted on the gate-rin g 52. This ring is set Within the steam-chamber 24 and provided with a rack 53 on a portion of its inner edge, which rack engages a pinion 54 on the shaft 55, that may extend to the outside of the case and be provided with any suitable handle 56, as shown in Fig. 4, whereby the gate-ring may be partially rotated to carry its depending pilivalves 47 to and from the jets. In order to give the pins or valves 47 a spiral movement and present them in proper alinement to the jets, I give the said ring a movement in the longitudinal direction of its axis in addition to its rotary movement around said axis. This I accomplish by means of inclines 57 on the gate-ring and guide-rollers 5S, mounted on any suitable support on the jet-ring. Three or four of these inclines and rollers arranged at the inner edge of the gate-ring will give it the proper movement to and from the jetriug as the gatering is rotated to open and close the jets.

It is apparent that some changes from the specific construction herein disclosed may be made, and therefore I do not wish to be uuderstood as limiting myself to the precise form of construction shown and described, but desire the liberty to make such changes in working my invention as may fairly come within the spirit and scope of the same.

I claim as my inventionl. The combination of the shaft C and turn bine wheel mounted thereon, with the waterbox surrounding said shaft, the annular cha1n ber in t-he case, also surrounding the said IIO nel into which the wheel discharges bounded by two conoidal walls, one of which meets and coincides with the exterior` circumference of the ring of the buckets and the other one with the interior circumference of the said ring, both walls increasing in diameter as they recede from the wheel, substantially as described.

4. In a steam-turbine, the scroll collectorpipe having an annular inlet on one 'side that receives the discharge from the wheel and with the e'liluent end of said pipe leading into a condenser, substantially as described.

5. In a steam-turbine,ascrollcollector-pipe that receives the discharge from the wheel, with one of its sides communicatingwith a gradually-enlarging discharge-chamber and its el'liuent end with a condenser, substantially as described. y

G. In a steam-turbine,a scroll collector-pipe having an annular inlet on one side through which the steam is admitted to the said scroll collector-pipe, substantially as described.

'7. In a side-vent turbine, an annular channel into which the wheel discharges, the dcning-walls of which channel meet and coincide with the interior and exterior circumference of the ring of buckets, the diameter of the said annular channel increasing as it recedes from the wheel, substantially as described.

8. Thehollow U-shaped buckets in the form of bucket-shells of substantially the same interior and exterior shape, substantiallyas described.

9. The combination of the U-shaped bucket` shells, with the wheel-head and a stud fitted to the interior of said shells, and means for holding the said bucket-shells on said studs, substantially as described.

10. The combination in a wheel of the wheelhead and buckets with the bucket-holding studs having the threaded end that enters the wheel-l1ead of a larger diameter than the body of the stud, substantially as described.

1l. In a wheel, the hollow U-shaped buckets with U-shaped interior and the holdingstuds fitted to said interior as described for centering the buckets on said studs, subst-antially as described.

l2. A series of jets, or jet-ring composed of a series of plates lapped one on the other, each plate containing a portion of a jet on one side and a portion of another jet on the each plate containing a portion of a jet on one side and a portion of another jet on the' opposite side, the said jet portions in the several plates being complementary parts, substantially as described.

14. A series of jets or jet-ring composed of a series of plates lapped one on the other, each plate containing a portion of a jet on one side and a portion of another jet on the opposite side, the said plates being wedgeshaped and converging toward the center of the ring, substantially as described.

15. The combination of two jetplates placed one upon the other and having a jet formed partly in one plate and partly in the other with the dividing-line between said two plates passing longitudinally through the jet, substantially as described.

16. In a series of plates lapped one upon the other in ring form with recesses in their confronting faces that form jets between said plates, the end portions of said plates on the discharge side being faced off to form a plane surface through which the jets pass obliquely and in a complete ring form substantially a continuous annular jet, substantially as described.

17. The combination of a series of plates which lap one upon the other and form a jetring having an annular recess with a holdingring fitted to said recess and supporting said plates, substantially as described.

18. The combination of an annular series of jets with a gate-ring having pointed pins rigidly attached thereto and means for moving the said ring in the longitudinal direction of its axis and to simultaneously rotate the said ring whereby the pins havea spiral movcV ment, substantially as described.

19. The combination of an annular series of jets, with a rotary gate-ring having pinvalves attached for closing said jets, inclines mounted on the said ring, and roller-guides y EDIVARD C. TERRY.

lVitnesses:

JAMES SHEPARD, A. W. STIPEK. 

